#!/usr/bin/python

# Copyright (c) 2009, Purdue University
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# modification, are permitted provided that the following conditions are met:
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# Redistributions in binary form must reproduce the above copyright notice, this
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# may be used to endorse or promote products derived from this software without
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"""Regex text editor simulator

Use in dnsuphost unittest, or anywhere a file needs to replace text 'host3'
with 'new_host'.
"""

__copyright__ = 'Copyright (C) 2009, Purdue University'
__license__ = 'BSD'
__version__ = '0.17'

import sys

f = open(sys.argv[3], 'r')
fcontents = f.read()
f.close()

fcontents = fcontents.replace(sys.argv[1], sys.argv[2])

f = open(sys.argv[3], 'w')
f.writelines(fcontents)
f.close()

sys.exit(0)
